Caster



May 2s, 1935. O. CLAY 2,003,249

GASTER Filed July 2, 1954 ATTO R N EY y 7 22 0m @www .sulla BY Patented May 28, 1935 UNITED STATES PATENT OFFICE Z Claims.

The invention relates to casters and more especially to the double wheel swiveled type of caster.

The primary object of the invention is the provision of a caster of this character, wherein the axles of the wheels thereof are independent of each other and interiitted one with the other, so that either wheel may turn free of the other and also lubricant as contained Within the body of the caster for lubricating purposes will be prevented from leaking from said body. l

Another object of the invention is the provision of a caster of this character, wherein the construction thereof is novel in form so as to prevent Water seeping into the body of the caster or wetting the bearings thereof, and thus assuring longevity to the caster without respect to the wear or duty of the same, the

caster being essentially for the dairy industry for mobile trucks, racks or the like.

A further object of the invention is the provision of a caster of this character which is simple in construction, thoroughly reliable and eicient inv its purpose, sturdy, durable, susceptible of continued lubrication, and inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of partsl as will be hereinafter more fully described in detail, illustrated in the accompanying drawing,.which discloses the preferred embodiment of the invention, and pointed out in the claims hereunto appended.

In the accompanying drawing:

Figure 1 is a side elevation of a caster constructed in accordance with the invention.

Figure 2 is a front elevation thereof.

Figure 3 is a vertical sectional view through the caster.

Figure 4 is a view similar to Figure 3 taken at right angles thereto. f

Figure 5 is a horizontal sectional view.

Similar reference characters indicate corresponding parts throughout the several views in `the drawing.

Referring to the drawing in detail, the caster comprises a hollow body I 0 having the removable side cheeks II and a cap or top I2, req spectively, the body being formed with a rounded offset portion I3. Carried by the side cheeks II eccentric to the center of the rounded portion I3 of said body are bearing ball boxings I4 iitted with bearing balls I 5, these being arranged about the inner ends of separably aligned axles I6, one being provided with a stud I'I and the other with a socket I8 therefor, so that the said axles I6, at their inner extremities, will be intertted with each other. The outer journal ends I9 of said axles I 6 are reduced to provide shoulders 20 which abut against bushings 2l iitted within the cheeks II and through which the journal ends I9 of said axles extend for accommodating wheels or rollers 22 rotatable `upon said journal ends.

Formed interiorly of the body I0 lto one side of the axles I6 is a Vertical lug 23 having a ball seat 24 accommodating the bearing ball 25, this being also received in a seat 26 in a swivel stern 21 which has the reduced upper end 28 passed through the top I2 and carrying an attaching plate or head 29, so that the said swivel stem 21 can be made secure to a load. Thus it will be seen that the stem 21 rotates upon the ball 25 as fitted in the seats 24 and 26, respectively.

The body I0 constitutes a lubricant or grease vcell or chamber and the same is lled through a lling nipple 30 as carried by said body.

VInterposed between hub-like' members 3| on the journal ends I9 and the cheeks II are washers 32Vwhich serve to prevent leakage of lubricant about the journal ends I9 in the use of the caster. l

What is claimed is:

1. A caster of the character described comprising a hollow body, a swivel lstein vertically fitted within the body, a bearing ball supported within the body against which the swivel stem operates, a pair of axles fitted transversely of said body and having interfitted ends, wheels upon said axles and at opposite sides of the body, and bearing ball boxings arranged within the body and about said axles and having bearing balls. j

2. A caster of the character described comprising a hollow body, a swivel stem vertically fitted within the body, a bearing ball supported within the body against which the swivel stem operates, a pair of axles tted transversely of said body and having intertted ends, Wheels Vupon said axles and at opposite sides of the body, bearing ball boxings arranged within the body and about said axles and having bearing balls, an attaching head on said swivel stem, and an inlet nipple carried by the body for delivering lubricant interiorly of the latter.

oscAR CLAY. 

